Linnæus (1678-1753) was an English naturalist and the father of evolutionary theory. He made significant contributions to biological science in many fields such as systematics, morphology, phylogeny, paleontology and zoology. He is the father of Charles Darwin. Linnæus' name originated from his native Sweden, but he later moved to England with his son, who had a similar name. When Linnæus was young, he worked at a local school and in 1709, he received an M.A. degree from Cambridge University. In the early years of the 18th century, when some naturalists were still questioning the authority of Aristotle's system, they often chose to study and analyze various plants, animals and minerals to find out their differences and similarities. This was a great interest for Linnæus. He became very interested in nature studies at an early age and he devoted himself to collecting specimens and observations from his surroundings as much as possible. Linnæus' research and thought were based on the ideas of Linnaeus (1707-1757), who was a Swedish naturalist, but the two men shared many similarities. For example, both Linnæus and Linnaeus had an interest in the classification of organisms (animal groups). They also made up the basic structures for classifying plants (systematics) and animals (morphology). The study of Linnæus was about biology. He focused on various areas such as morphology, systematics, evolution and phylogeny. Linnæus' contribution to natural science cannot be overstated. From his observations of nature he saw the common traits that exist among all species and found them in the fossils and minerals around him. He had a great appreciation for these similarities and recognized their importance. His works are still relevant today, for example, his theory about evolution is still widely accepted and still used to explain biological evolution. Linnæus' method of observation was very innovative and he was often unable to see clearly because the observations of plants, animals and minerals were too small or too heavy for him to read. Therefore, he had to make use of binoculars and microscopes to observe his objects in detail. He believed that a single eye could not distinguish all these things but the combination of both eyes can do so. The name Linnæus was derived from its connection with Linnaeus (1707-1757) which is also the basis for the common usage of the word.